The Ontario government’s latest budget calls for more miles of tolled commuter lanes on major highways in the Toronto region.

According to the latest document, the province plans to build high-occupancy vehicle lanes, or HOV lanes, on stretches of highways 401, 404, 410, and 427.

The HOV lanes would be restricted to carpoolers, transit vans and buses. A spokesperson for the Ministry of Transportation of Ontario says the lanes would not be open to trucks with single occupants. Even with two occupants, a truck must be shorter than 6.5 meters (about 21 feet) and weigh less than 4,500 kilograms (about 9,900 pounds) to use the lanes.

Ontario currently has about 80 kilometers (about 50 miles) of high-occupancy commuter lanes. The spokesperson says the province plans to add 450 kilometers (about 270 miles) to the network over the next 25 years in the region known as the Greater Golden Horseshoe.